答案是switch。下面从两个方面说明: 性能 由于实现机制的差别,switch使用查询表。它在运行时能直接把程序控制流转移到匹配的case/default。这在性能上较采用顺序比较的if好。 当然,好坏是相对而言的,要根据具体的使用场景分析。 对于只有较少量的条件需要判断的情况下,if-else反而更小更快,一般而言,条件数小于5时是...
Inswitch case, the expression in the switch statement decides which case to execute along with a break statement after each case. This allows the compiler to execute only the code in which the case condition is met, making it a more streamlined version of if-else. The syntax looks like thi...
default: statementN; break; } switch语句的执行过程如下: 表达式的值被计算。 表达式的值被依次与各个case后的常量进行比较,直到找到与之匹配的常量。 如果找到匹配的常量,执行该常量对应的代码块,并跳出switch语句。 如果没有找到匹配的常量,执行default对应的代码块(如果有),并跳出switch语句。
Though those code is clean, but everytime if we wanna add a new type of Argument, we have to add new if-else statement in "parseSchemaElement" method, and add new case statement in "errorMessage". If your Args have to support more than 10 types argument, your if-else(switch-case) ...
If-else statement Nested if statement If-else-if ladder Condition Statement Switch case Jump statements (break, continue, goto, return) We will discuss each of these types of loop control statements in detail, with the help of code examples, in the section ahead. If Statement In C++ In C++...
Transform a SWITCH statement to an IF...ELSE statement, Converting Switch-Case Statements to If-Else Statements: A Guide, Transforming Switch statement to If-Else in C#, Transforming Conditional Logic from if to switch Statement
c#if-statementperformanceswitch-statement Is “else if” faster than “switch() case”? 本问题已经有最佳答案,请猛点这里访问。 Possible Duplicate: Is there any significant difference between using if/else and switch-case in C#? 我以前是帕斯卡人,现在在学C。我的问题是: 下面的代码是否比进行切换...
statement(s) else: # 如果条件为假,则执行这里的代码 statement(s) “` 3. if-elif-else语句:if-elif-else语句可以根据多个条件的真假来执行不同的代码块。它先判断第一个条件,如果条件为真,则执行对应的代码块;如果条件为假,则继续判断下一个条件,以此类推。最后,如果所有条件都为假,则执行else代码块。
switch case statement, by visiting theSwitch Case Implementation. I know it feels odd because even though Python has been around for a long while now,"switch case in Python "is still a popular search term on Google. So, if Python does not have a switch statement, what do we have for ...
Javascript Programming: If Else + Switch Statement, 视频播放量 4、弹幕量 0、点赞数 0、投硬币枚数 0、收藏人数 0、转发人数 0, 视频作者 张伊不会写代码, 作者简介 ,相关视频:Javascript Programming: Variables,Facilitation Skills - Explain Every Exercise With